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feat(watcher): add GetLastInputInfo P/Invoke for idle detection

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Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
AJ Isaacs
2026-02-27 00:11:42 -05:00
parent 400e74be51
commit ea688c0ab0
1 changed files with 18 additions and 0 deletions
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18
WindowWatcher/NativeMethods.cs
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@@ -13,4 +13,22 @@ internal static partial class NativeMethods
[LibraryImport("user32.dll", SetLastError = true)] [LibraryImport("user32.dll", SetLastError = true)]
internal static partial uint GetWindowThreadProcessId(IntPtr hWnd, out uint processId); internal static partial uint GetWindowThreadProcessId(IntPtr hWnd, out uint processId);
[StructLayout(LayoutKind.Sequential)]
internal struct LASTINPUTINFO
{
public uint cbSize;
public uint dwTime;
}
[DllImport("user32.dll")]
internal static extern bool GetLastInputInfo(ref LASTINPUTINFO plii);
internal static TimeSpan GetIdleTime()
{
var info = new LASTINPUTINFO { cbSize = (uint)Marshal.SizeOf<LASTINPUTINFO>() };
if (!GetLastInputInfo(ref info))
return TimeSpan.Zero;
return TimeSpan.FromMilliseconds(Environment.TickCount64 - info.dwTime);
}
} }